/*******************************************************************************
 * Copyright (c) 2000, 2015 IBM Corporation and others.
 *
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.jface.viewers;

import org.eclipse.swt.graphics.Image;

/**
 * Extends <code>IBaseLabelProvider</code> with the methods
 * to provide the text and/or image for each column of a given element.
 * Used by table viewers.
 *
 * @see TableViewer
 */
public interface ITableLabelProvider extends IBaseLabelProvider {
	/**
	 * Returns the label image for the given column of the given element.
	 *
	 * @param element the object representing the entire row, or
	 *    <code>null</code> indicating that no input object is set
	 *    in the viewer
	 * @param columnIndex the zero-based index of the column in which
	 *   the label appears
	 * @return Image or <code>null</code> if there is no image for the
	 *  given object at columnIndex
	 */
	public Image getColumnImage(Object element, int columnIndex);

	/**
	 * Returns the label text for the given column of the given element.
	 *
	 * @param element the object representing the entire row, or
	 *   <code>null</code> indicating that no input object is set
	 *   in the viewer
	 * @param columnIndex the zero-based index of the column in which the label appears
	 * @return String or or <code>null</code> if there is no text for the
	 *  given object at columnIndex
	 */
	public String getColumnText(Object element, int columnIndex);
}
